Add the thread functions to top level lib/util.

[ira/wip.git] / lib / util / smb_threads.c

diff --git a/lib/util/smb_threads.c b/lib/util/smb_threads.c
new file mode 100644 (file)
index 0000000..84dec4d
--- /dev/null
+++ b/lib/util/smb_threads.c
@@ -0,0 +1,105 @@
+/*
+   Unix SMB/CIFS implementation.
+   SMB client library implementation (thread interface functions).
+   Copyright (C) Jeremy Allison, 2009.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * This code is based in the ideas in openssl
+ * but somewhat simpler and expended to include
+ * thread local storage.
+ */
+
+#include "includes.h"
+
+#define NUM_GLOBAL_LOCKS 1
+
+/*********************************************************
+ Functions to vector the locking primitives used internally
+ by libsmbclient.
+*********************************************************/
+
+const struct smb_thread_functions *global_tfp;
+
+/*********************************************************
+ Dynamic lock array.
+*********************************************************/
+
+void **global_lock_array;
+
+/*********************************************************
+ Function to set the locking primitives used by libsmbclient.
+*********************************************************/
+
+int smb_thread_set_functions(const struct smb_thread_functions *tf)
+{
+       int i;
+
+       global_tfp = tf;
+
+       /* Here we initialize any static locks we're using. */
+       global_lock_array = (void **)SMB_MALLOC_ARRAY(void *, NUM_GLOBAL_LOCKS);
+       if (global_lock_array == NULL) {
+               return ENOMEM;
+       }
+
+       for (i = 0; i < NUM_GLOBAL_LOCKS; i++) {
+               char *name = NULL;
+               if (asprintf(&name, "global_lock_%d", i) == -1) {
+                       SAFE_FREE(global_lock_array);
+                       return ENOMEM;
+               }
+               global_tfp->create_mutex(name,
+                               &global_lock_array[i],
+                               __location__);
+               SAFE_FREE(name);
+       }
+
+       return 0;
+}
+
+#if 0
+/* Test. - pthread implementations. */
+#include <pthread.h>
+
+#ifdef malloc
+#undef malloc
+#endif
+
+SMB_THREADS_DEF_PTHREAD_IMPLEMENTATION(tf);
+
+/* Test function. */
+int test_threads(void)
+{
+       int ret;
+       void *plock = NULL;
+
+       smb_thread_set_functions(&tf);
+
+       if ((ret = SMB_THREAD_CREATE_MUTEX("test", plock)) != 0) {
+               printf("Create lock error: %d\n", ret);
+       }
+       if ((ret = SMB_THREAD_LOCK(plock, SMB_THREAD_LOCK)) != 0) {
+               printf("lock error: %d\n", ret);
+       }
+       if ((SMB_THREAD_LOCK(plock, SMB_THREAD_UNLOCK)) != 0) {
+               printf("unlock error: %d\n", ret);
+       }
+       SMB_THREAD_DESTROY_MUTEX(plock);
+
+       return 0;
+}
+#endif